May - June
Cool or dry
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Buy 3 and get a 10% discount
Physocarpus opulifolius is a decorative native shrub with a textured bark that peels gracefully. With an abundant flowering, it forms natural-looking groves where birds are abundant.
Plantation : Mix seeds with an equal amount of damp sand or vermiculite. Place the mixture in a sealed plastic bag. Store the bag in a refrigerator or cool storage room for 90 days. Sow seeds when there is no risk of ground frost. Or plant the seeds outdoors.
Soil : cool or dry
Culturals practices : Or plant the seeds outdoors during the fall. Germination will occur the following spring or later on.